How to Change FTP Port in Linux
FTP or File Transfer Protocol is one of the oldest network protocol used today as standard file transfers over computer networks. FTP protocol uses the standard port 21/TCP as command port. Although, there are...
Tagged: Linux Security Tips
How to Check and Patch Meltdown CPU Vulnerability in Linux
Meltdown is a chip-level security vulnerability that breaks the most fundamental isolation between user programs and the operating system. It allows a program to access the operating system kernel’s and other programs’ private memory...
How to Check Integrity of File and Directory Using “AIDE” in Linux
In our mega guide to hardening and securing CentOS 7, under the section “protect system internally”, one of the useful security tools we listed for internal system protection against viruses, rootkits, malware, and detection...
How to Lock User Accounts After Failed Login Attempts
This guide will show how to lock a system user’s account after a specifiable number of failed login attempts in CentOS, RHEL and Fedora distributions. Here, the focus is to enforce simple server security...
How To Protect Hard and Symbolic Links in CentOS/RHEL 7
In Linux, hard and soft links are referenced to files, which are very important, if not protected very well, any vulnerabilities in them can be exploited by malicious system users or attackers. A common...
TMOUT – Auto Logout Linux Shell When There Isn’t Any Activity
How often do you leave a Linux system idle after login; a situation which can be referred to as an ‘idle session’, where you are not attending to the system by running commands or...
